Q6UVK1 (CSPG4_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 88.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Chondroitin sulfate proteoglycan 4 Alternative name(s): Chondroitin sulfate proteoglycan NG2 Melanoma chondroitin sulfate proteoglycan Melanoma-associated chondroitin sulfate proteoglycan | ||||
| Gene names |
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| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 2322 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Proteoglycan playing a role in cell proliferation and migration which stimulates endothelial cells motility during microvascular morphogenesis. May also inhibit neurite outgrowth and growth cone collapse during axon regeneration. Cell surface receptor for collagen alpha 2(VI) which may confer cells ability to migrate on that substrate. Binds through its extracellular N-terminus growth factors, extracellular matrix proteases modulating their activity. May regulate MPP16-dependent degradation and invasion of type I collagen participating in melanoma cells invasion properties. May modulate the plasminogen system by enhancing plasminogen activation and inhibiting angiostatin. Functions also as a signal transducing protein by binding through its cytoplasmic C-terminus scaffolding and signaling proteins. May promote retraction fiber formation and cell polarization through Rho GTPase activation. May stimulate alpha-4, beta-1 integrin-mediated adhesion and spreading by recruiting and activating a signaling cascade through CDC42, ACK1 and BCAR1. May activate FAK and ERK1/ERK2 signaling cascades. Ref.2 Ref.6 Ref.7 |
| Subunit structure | Interacts with the first PDZ domain of MPDZ. Interacts with PRKCA. Binds TNC, laminin-1, COL5A1 and COL6A2. Interacts with PLG and angiostatin. Binds FGF2 and PDGFA. Interacts with GRIP1, GRIP2 and GRIA2. Forms a ternary complex with GRIP1 and GRIA2 By similarity. Interacts with LGALS3 and the integrin composed of ITGB1 and ITGA3. Interacts with ITGA4 through its chondroitin sulfate glycosaminoglycan. Interacts with BCAR1, CDC42 and ACK1. Interacts with MMP16. Ref.5 Ref.6 Ref.7 Ref.9 |
| Subcellular location | Apical cell membrane; Single-pass type I membrane protein; Extracellular side By similarity. Cell projection › lamellipodium membrane; Single-pass type I membrane protein; Extracellular side By similarity. Note: Localized at the apical plasma membrane it relocalizes to the lamellipodia of astrocytoma upon phosphorylation by PRKCA. Localizes to the retraction fibers. Localizes to the plasma membrane of oligodendrocytes By similarity. |
| Tissue specificity | Detected only in malignant melanoma cells. Ref.1 |
| Post-translational modification | O-glycosylated; contains glycosaminoglycan chondroitin sulfate which are required for proper localization and function in stress fiber formation By similarity. Involved in interaction with MMP16 and ITGA4. Phosphorylation by PRKCA regulates its subcellular location and function in cell motility By similarity. |
| Miscellaneous | Valuable marker for several incompletely differentiated precursor cells. |
| Sequence similarities | Contains 15 CSPG (NG2) repeats. Contains 2 laminin G-like domains. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 29 | 29 | Potential | ||||||||
| Chain | 30 – 2322 | 2293 | Chondroitin sulfate proteoglycan 4 | PRO_0000041962 | |||||||
Regions | |||||||||||
| Topological domain | 30 – 2224 | 2195 | Extracellular Potential | ||||||||
| Transmembrane | 2225 – 2245 | 21 | Helical; Potential | ||||||||
| Topological domain | 2246 – 2322 | 77 | Cytoplasmic Potential | ||||||||
| Domain | 30 – 192 | 163 | Laminin G-like 1 | ||||||||
| Domain | 202 – 380 | 179 | Laminin G-like 2 | ||||||||
| Repeat | 430 – 523 | 94 | CSPG 1 | ||||||||
| Repeat | 556 – 643 | 88 | CSPG 2 | ||||||||
| Repeat | 665 – 764 | 100 | CSPG 3 | ||||||||
| Repeat | 792 – 878 | 87 | CSPG 4 | ||||||||
| Repeat | 900 – 989 | 90 | CSPG 5 | ||||||||
| Repeat | 1020 – 1108 | 89 | CSPG 6 | ||||||||
| Repeat | 1128 – 1216 | 89 | CSPG 7 | ||||||||
| Repeat | 1241 – 1337 | 97 | CSPG 8 | ||||||||
| Repeat | 1360 – 1449 | 90 | CSPG 9 | ||||||||
| Repeat | 1476 – 1561 | 86 | CSPG 10 | ||||||||
| Repeat | 1583 – 1679 | 97 | CSPG 11 | ||||||||
| Repeat | 1707 – 1803 | 97 | CSPG 12 | ||||||||
| Repeat | 1835 – 1922 | 88 | CSPG 13 | ||||||||
| Repeat | 1944 – 2029 | 86 | CSPG 14 | ||||||||
| Repeat | 2048 – 2147 | 100 | CSPG 15 | ||||||||
| Region | 30 – 639 | 610 | Globular or compact configuration stabilized by disulfide bonds | ||||||||
| Region | 30 – 639 | 610 | Neurite growth inhibition By similarity | ||||||||
| Region | 574 – 1040 | 467 | Interaction with COL6A2 By similarity | ||||||||
| Region | 631 – 1446 | 816 | Interaction with COL5A1 By similarity | ||||||||
| Region | 1586 – 2221 | 636 | Neurite growth inhibition By similarity | ||||||||
| Region | 1587 – 2221 | 635 | Cysteine-containing | ||||||||
| Motif | 2320 – 2322 | 3 | PDZ-binding | ||||||||
| Compositional bias | 639 – 1586 | 948 | Gly/Ser-rich (glycosaminoglycan attachment domain) | ||||||||
Amino acid modifications | |||||||||||
| Modified residue | 2252 | 1 | Phosphothreonine; by PKC/PRKCA By similarity | ||||||||
| Glycosylation | 130 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 348 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 427 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 685 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 772 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 995 | 1 | O-linked (Xyl...) (chondroitin sulfate) By similarity | ||||||||
| Glycosylation | 1131 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1202 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1364 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1449 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1645 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 1909 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 2016 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 2034 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 2040 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 2075 | 1 | N-linked (GlcNAc...) Ref.10 | ||||||||
| Disulfide bond | 169 ↔ 192 | By similarity | |||||||||
| Disulfide bond | 354 ↔ 380 | By similarity | |||||||||
Natural variations | |||||||||||
| Natural variant | 1703 | 1 | R → H. Corresponds to variant rs8023621 [ dbSNP | Ensembl ]. | VAR_061733 | |||||||
Experimental info | |||||||||||
| Sequence conflict | 5 – 6 | 2 | PR → RG in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 5 – 6 | 2 | PR → RG in AAQ62842. Ref.2 | ||||||||
| Sequence conflict | 477 – 478 | 2 | RH → HY in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 486 | 1 | P → L in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 631 | 1 | R → C in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 715 – 717 | 3 | QGA → HST in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 942 | 1 | H → L in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 1208 | 1 | R → E in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 1405 | 1 | A → P in CAA65529. Ref.1 | ||||||||
| Sequence conflict | 1557 | 1 | R → P in CAA65529. Ref.1 | ||||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Molecular cloning of a human melanoma-associated chondroitin sulfate proteoglycan." Pluschke G., Vanek M., Evans A., Dittmar T., Schmid P., Itin P., Filardo E.J., Reisfeld R.A. Proc. Natl. Acad. Sci. U.S.A. 93:9710-9715(1996) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], TISSUE SPECIFICITY. Tissue: Melanoma. |
| [2] | "Melanoma chondroitin sulfate proteoglycan enhances FAK and ERK activation by distinct mechanisms." Yang J., Price M.A., Neudauer C.L., Wilson C., Ferrone S., Xia H., Iida J., Simpson M.A., McCarthy J.B. J. Cell Biol. 165:881-891(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION. Tissue: Melanoma. |
| [3] | "Analysis of the DNA sequence and duplication history of human chromosome 15." Zody M.C., Garber M., Sharpe T., Young S.K., Rowen L., O'Neill K., Whittaker C.A., Kamal M., Chang J.L., Cuomo C.A., Dewar K., FitzGerald M.G., Kodira C.D., Madan A., Qin S., Yang X., Abbasi N., Abouelleil A. Nusbaum C.Nature 440:671-675(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [4] | Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. Venter J.C.Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [5] | "A role of chondroitin sulfate glycosaminoglycan binding site in alpha4beta1 integrin-mediated melanoma cell adhesion." Iida J., Meijne A.M.L., Oegema T.R. Jr., Yednock T.A., Kovach N.L., Furcht L.T., McCarthy J.B. J. Biol. Chem. 273:5955-5962(1998) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH ITGA4. |
| [6] | "Melanoma chondroitin sulphate proteoglycan regulates cell spreading through Cdc42, Ack-1 and p130cas." Eisenmann K.M., McCarthy J.B., Simpson M.A., Keely P.J., Guan J.-L., Tachibana K., Lim L., Manser E., Furcht L.T., Iida J. Nat. Cell Biol. 1:507-513(1999) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH BCAR1; CDC42 AND ACK1, FUNCTION. |
| [7] | "Melanoma chondroitin sulfate proteoglycan regulates matrix metalloproteinase-dependent human melanoma invasion into type I collagen." Iida J., Pei D., Kang T., Simpson M.A., Herlyn M., Furcht L.T., McCarthy J.B. J. Biol. Chem. 276:18786-18794(2001) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MMP16, FUNCTION. |
| [8] | "A novel repeat in the melanoma-associated chondroitin sulfate proteoglycan defines a new protein family." Staub E., Hinzmann B., Rosenthal A. FEBS Lett. 527:114-118(2002) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION OF CSPG REPEATS. |
| [9] | "NG2 proteoglycan promotes endothelial cell motility and angiogenesis via engagement of galectin-3 and alpha3beta1 integrin." Fukushi J., Makagiansar I.T., Stallcup W.B. Mol. Biol. Cell 15:3580-3590(2004) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH ITGA3; ITGB1 AND LGALS3. |
| [10] | "Human plasma N-glycoproteome analysis by immunoaffinity subtraction, hydrazide chemistry, and mass spectrometry." Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E., Moore R.J., Smith R.D. J. Proteome Res. 4:2070-2080(2005) [PubMed] [Europe PMC] [Abstract] Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-2075, MASS SPECTROMETRY. Tissue: Plasma. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | X96753 mRNA. Translation: CAA65529.1. AY359468 mRNA. Translation: AAQ62842.1. AC105020 Genomic DNA. No translation available. CH471136 Genomic DNA. Translation: EAW99239.1. CH471136 Genomic DNA. Translation: EAW99240.1. |
| IPI | IPI00019157. |
| RefSeq | NP_001888.2. NM_001897.4. |
| UniGene | Hs.513044. |
3D structure databases | |
| ProteinModelPortal | Q6UVK1. |
| SMR | Q6UVK1. Positions 8-369, 541-569, 1819-1874. |
| ModBase | Search... |
Protein-protein interaction databases | |
| MINT | MINT-1197576. |
| STRING | 9606.ENSP00000312506. |
PTM databases | |
| PhosphoSite | Q6UVK1. |
Polymorphism databases | |
| DMDM | 296434468. |
Proteomic databases | |
| PaxDb | Q6UVK1. |
| PRIDE | Q6UVK1. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000308508; ENSP00000312506; ENSG00000173546. |
| GeneID | 1464. |
| KEGG | hsa:1464. |
| UCSC | uc002baw.3. human. |
Organism-specific databases | |
| CTD | 1464. |
| GeneCards | GC15M075966. |
| H-InvDB | HIX0026925. HIX0038117. HIX0172852. HIX0177623. HIX0177624. |
| HGNC | HGNC:2466. CSPG4. |
| HPA | CAB016189. HPA002951. |
| MIM | 601172. gene. |
| neXtProt | NX_Q6UVK1. |
| PharmGKB | PA26963. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG261397. |
| HOGENOM | HOG000170195. |
| HOVERGEN | HBG081360. |
| InParanoid | Q6UVK1. |
| KO | K08115. |
| OMA | RPIYRFT. |
| OrthoDB | EOG42BX7N. |
| PhylomeDB | Q6UVK1. |
Enzyme and pathway databases | |
| Reactome | REACT_111217. Metabolism. REACT_116125. Disease. |
Gene expression databases | |
| Bgee | Q6UVK1. |
| CleanEx | HS_CSPG4. |
| Genevestigator | Q6UVK1. |
| GermOnline | ENSG00000173546. Homo sapiens. |
Family and domain databases | |
| Gene3D | 2.60.120.200. 2 hits. |
| InterPro | IPR008985. ConA-like_lec_gl_sf. IPR013320. ConA-like_subgrp. IPR027210. Cspg4. IPR001791. Laminin_G. [Graphical view] |
| PANTHER | PTHR32539:SF0. PTHR32539:SF0. 1 hit. |
| Pfam | PF02210. Laminin_G_2. 2 hits. [Graphical view] |
| SMART | SM00282. LamG. 2 hits. [Graphical view] |
| SUPFAM | SSF49899. ConA_like_lec_gl. 2 hits. |
| PROSITE | PS50025. LAM_G_DOMAIN. 2 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | CSPG4. human. |
| GenomeRNAi | 1464. |
| NextBio | 6013. |
| SOURCE | Search... |
Entry information
| Entry name | CSPG4_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q6UVK1 Secondary accession number(s): D3DW77, Q92675 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 15 Human chromosome 15: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
